I'm putting together a world physical map and I am looking for the highest resolution data set available. this is the best that i've found so far is from: http://www.mapmart.com/DEM/DEM.htm (their SRTM-90 3" or 90 Meters set). the problem is that this is only from57 South Latitude to 61 North Latitude...another words no Northern Alaska or Santa's house. Any suggestion on where to purchase a better set would be great!Thanks,J

Claude

Posted 20 July 2006 - 02:55 PM

Claude

Master Contributor

Validated Member

107 posts

Location:Denver, CO

United States

i'm looking for the highest resolustion worldwide DEM data set possible. this is the best that i've found so far: http://www.mapmart.com/DEM/DEM.htm (their SRTM-90 3" or 90 Meters set). the problem is that this is only from 57 South Latitude to 61 North Latitude...in other words no N.Alaska or Santa's house. Any ideas of a complete worldwide set?

mdsumner

Posted 20 July 2006 - 07:34 PM

merft

Posted 21 July 2006 - 12:45 AM

merft

Key Contributor

Validated Member

86 posts

Location:Colorado

United States

I'm putting together a world physical map and I am looking for the highest resolution data set available. this is the best that i've found so far is from: http://www.mapmart.com/DEM/DEM.htm (their SRTM-90 3" or 90 Meters set). the problem is that this is only from57 South Latitude to 61 North Latitude...another words no Northern Alaska or Santa's house. Any suggestion on where to purchase a better set would be great!Thanks,J

DaveB

Posted 21 July 2006 - 09:19 AM

DaveB

Hall of Fame

Validated Member

1,069 posts

Gender:Not Telling

Location:Redlands, CA

United States

Is there some kind of cartographic scavenger hunt going on? 2 people looking for the best DEM data for the entire world at nearly the same time. For the scale of world maps (unless they are going to be huge) the readily available data already mentioned are fine.There is also Tom Patterson's natural earth data. All set to go, with Tom's usual high quality. It's not just the landcover data either. He has gray-scale shaded relief, too (among other data). No dems as far as I can find, though (hint, hint, Tom ).

Hans van der Maarel

Posted 21 July 2006 - 09:25 AM

Hans van der Maarel

CartoTalk Editor-in-Chief

Admin

3,934 posts

Gender:Male

Location:The Netherlands

Interests:Cartography, GIS, history, popular science, music.

Netherlands

Actually, Tom also did CleanTopo2, which includes bathymetry. Well worth checking out. It's available as a greyscale tiff, but if somebody is interested, I can get you a set of VNS .elev files of this as well. Just PM me.

Posted 04 August 2006 - 01:07 PM

BEAVER

Posted 04 August 2006 - 02:05 PM

BEAVER

Master Contributor

Validated Member

185 posts

Location:Middletown, NY

United States

I don't know anyone who views a wall map from several feet. Maybe if you are talking about something really big that is meant to be viewed from the distance, like in the museum where there is barrier to prevent you from getting too close. Or maybe a poster type of map somewhere on the building that has vary little detail. Most people walk up to a wall map within one foot. I always watch other people when the view maps to see what they are looking for and how they read the map. I would say 95% will touch the map with their finger by pointing to something. We had some glass incased maps at the Shedd Aquarium in Chicago and the glass had to be cleaned every day from the hundreds of finger prints. We had plenty of wall maps at my work walls and those are always view from less then a foot and for that printing anything in less than 300dpi looks really bad. The Catskill Map I did that was 8 feet wide was 29,500 pixels wide and at that resolution, you could see some spots being pixalized.

BEAVER

Posted 05 August 2006 - 09:14 AM

BEAVER

Master Contributor

Validated Member

185 posts

Location:Middletown, NY

United States

Perfect example. They are forced to view it from the distance. Plus most kids are not into maps and those that are, will end up on this forum in few years. I'm talking about general public with a wall map displayed in general public place. Here in the Catskills and Adirondacks there is planty of wall maps in the kiosks and those are always viewed up close.